Miata Turbo Forum - Boost cars, acquire cats.

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- Engine Performance (https://www.miataturbo.net/engine-performance-56/)

- - ARP Head studs (https://www.miataturbo.net/engine-performance-56/arp-head-studs-53305/)

Aricjm15

11-19-2010 09:37 PM

Quote:

Originally Posted by twpipe (Post 659627)

ARP Head studs. I see both out there 218-5401 and more often 218-4701. What is the difference ?

4701 is the head stud, 5401 is the main stud.

twpipe

11-19-2010 09:51 PM

I am very much a newbee, old but still missing it. Bolting on the head is head , main stud is....? thanks for the reply.

Aricjm15

11-19-2010 10:08 PM

Main studs are used for strapping down the crank. I don't really have a good picture to illustrate this, but I will post what I have.

http://img59.imageshack.us/img59/3967/dsc01044n.jpg

Underway

11-22-2010 02:17 AM

1.6 vs 1.8 maybe? Just guessing.

^^^Never mind... stupid 'last unread" button.^^^

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